NSD-Maker: A Nassi–Shneiderman Diagrams editor for the web.

Try it here

Download instructions

git clone https://github.com/charyan/nsdmaker.git
cd nsdmaker
firefox ./index.html

Keyboard Shortcuts

Shortcut	Action
`Alt` + `Left-Click`	Move the diagram
`Alt` + `Scroll`	Zoom In/Out
`Ctrl` + `A`	Center canvas
`Ctrl` + `E`	Export diagram to PNG
`Ctrl` + `O`	Open Diagram
`Ctrl` + `S`	Save Diagram
`Ctrl` + `Y`	Redo
`Ctrl` + `Z`	Undo
`Delete`	Delete selected element